Here's the other half of this train wreck. sorry, I forgot he started a second thread on it. The replacement eng came from a Pontiac 6000. https://www.fiero.nl/forum/Forum2/HTML/020407.html

[This message has been edited by maryjane (edited 04-07-2002).]

since water pumps are cheap, id buy a 6000 one without a warranty and try it.... couldnt hurt

quote Originally posted by maryjane: Here's the other half of this train wreck. sorry, I forgot he started a second thread on it. The replacement eng came from a Pontiac 6000. https://www.fiero.nl/forum/Forum2/HTML/020407.html Oh, there's more? HAPPY-HAPPY JOY-JOY! [This message has been edited by maryjane (edited 04-07-2002).]

Is the rotation direction different for the 6000 vs. the Fiero? If so, just changine the w/p might not be the complete answer because the pump mount will also be different.

The water pump design for the fiero is completly different then the design for the 6000. A fiero pump will NOT fit on the housing for a 6000 water pump. I have a Brand new water pump(Not rebuilt but NEW) with the Metal Impellar.
I don't know what else would be different about it. I have the belt put on the right way, hense the pulley "LOOKS" like it is turning the right way.(I can't tell if the impellar turns)

When I got the pump I had to use my old pulley. they puled it for me and put it on the new pump. But they put my pump in a vice, with the impellar clamped? Not the whole impellar but right as the impellar turns into the shaft. Would that have #$%^@# it up?

Thanks

p.s.
If I solve my own prob do I get $5.00??

Id really be inclined to think they messed it up. either its spinning on shaft or one or more vanes are bent enough to lock it up. tolerance is pretty close. If you dont use one for Fiero, the vanes also go in the wrong direction so it wouldnt pump water, at least as much as it needs to. Thats what ive been told before from a GM service manager.

Keep in mind guys that I drove this car for 6 months without a problem. I only changed the pump NOT the housing. A fiero pump will not fit on the housing at all. The 6000 pump is what came off, I got another 6000 pump after I bought a fiero pump and found out it doesn't fit. The 6000 pump bolted right up in 15 min. Same pump as the one that came off.
So the 6000 pump obviously turns the impellar the right way. And the impellar blades go the same way.

To start simple...was working before you changed the pump (not counting the bad pump - assuming this is why you changed it in the first place - or was it because it was overheating)? If so then the problem has to be with the pump or whatever else you did at the time. Putting a pump in a vice to install the pulley is a really bad ideal as the vanes could be bent (a press should be used with the pump properly supported).

Gaskets should be used for proper spacing.

my 2 cents

Tim

quote Originally posted by BigNickDog: The water pump design for the fiero is completly different then the design for the 6000. A fiero pump will NOT fit on the housing for a 6000 water pump. I have a Brand new water pump(Not rebuilt but NEW) with the Metal Impellar. I don't know what else would be different about it. I have the belt put on the right way, hense the pulley "LOOKS" like it is turning the right way.(I can't tell if the impellar turns) When I got the pump I had to use my old pulley. they puled it for me and put it on the new pump. But they put my pump in a vice, with the impellar clamped? Not the whole impellar but right as the impellar turns into the shaft. Would that have #$%^@# it up? Thanks p.s. If I solve my own prob do I get $5.00??

No Nick, you don't get the $$ & neither do I.
I just hope you get it fixed, & then let us know, so it can be found in the archives later on. It's kind of a unique problem, tho Indiana_Resto_Guy obviously has had some dealings with low flow. Keep us informed.
Don

The below image shows 2 GMB brand pumps side by side. (Images from partsdirect.com ) Note the curve of the impeller blades is reversed on the 6000 pump relative the Fiero one. (Direction of rotation when viewing pulley end of shaft.)

Unless one of those image scans is reversed, and I non't think they are.... The 6000 pump will never work right in Fiero. Even a straight blade pump would be seriously impared.

This means, as I pointed out in your other thread about part interchange, that You Must change the pump and the housing to Fiero parts.

(Hmmm, I may be mailing an envelope to Delaware soon,as well as a couple other places.) A couple of questions tho...
Ogre, that would mean that the serpentine belt routing you show in your cave would turn the 6000 pump backwards? How was he able to drive the car with the engine from the 6000 for 6 months. I'm not doubting what you say, just trying to understand a little better, six Nick has already brought up the point about the 6 months of driving..Cold weather maybe? I don't know where Nick is located, may be Antartica for all I know. (Nick, The Ogre is only wrong once in every 15th odd numbered blue moon, heed what he says.)

[This message has been edited by maryjane (edited 04-08-2002).]

Even though the Fiero uses a serpentine drive belt, the water pump is still driven in the "normal" direction. The 6000 is not. I have no idea how he was able to run the engine before, but as Rocky said to Bullwinkle- That will never work! TheOgre is right-again, imagine that

So I should buy a new water pump housing and a new water pump? Both parts for a fiero engine? then attach those to my 6000 engine. Will the housing bolt right up? But why did it pump water before?

You might go here & try to contact one of those that has done this swap. It's an old post, but maybe the email addresses are still good. https://www.fiero.nl/forum/Archives/Archive-000001/HTML/20010924-2-007738.html

Think of the belt, well, as a belt. (This also holds true even for V belts but you rarely ever see things run on the back of a V.)

Anything inside the belt, meaning all your grooved pulleys, will turn the same way as the crank.

Anything running on the outside, All smooth pulleys, turns the oposite way of the crank.

Here's the normal Fiero belt map.

Here's what I remember of the FWD map. (It's been awhile since I had one in front of me.)

Now, follow the belt path with you finger. On the fiero map only the tensioner is on the outside of the belt. In the FWD one, both the tensioner and the WP are outside.

[This message has been edited by theogre (edited 04-08-2002).]

I have an 85 4cyl parts car. It has AC though, and the pump housing has 2 hoses leading to it. The pump on my 88 only has 1 hose. Can I use the one from 85 or should I get one for 88 with only 1 hose inlet?

thanks

Does the 85 one have one large hose and one small one? The small one is the heater return. In 87-88 the heater return is spliced in under the car. (you can see the spice just in front of the right front corner of the cradel.)

Ideally you want an 88 housing but the 85 would work in a pinch if you plug the heater hose (small) opening. To plug the hole, use a short section of heater hose and a solid metal plug. Put one clamp to hold the plug and another to hold the hose on the pump.

The 6000 pump might move some water when spun in reverse. It might even be just enough to keep the car cool under certain conditions. It will never work like the correct one will. It has to go.

Looks to me like the 6000 water pump spun in reverse would try to push water backwards, toward the normaly outlet side of the radiator. I've yet to backflush my radiator fully, kinda halfas*ed did it one day. Indiana_resto_guy, I'm going to try your 'no gasket' procedure next time I have to change my water pump, hopefully not for a while tho.
Nick, before you pull your watepump off, mark the rotation it is turning, then look at the impellor when you get it off, & let us know if it is as suggested, just for general info, please. I've done a pretty extensive search thru the archives, & this is a unique problem as far as I can tell. Sorry it had to be you Nick, but it's good this info came to light, for future information in searches. Unless something else in the way of a solution comes fwd, the problem has seen it's solution, as far as the 'no flow' problem goes, I believe & hope.
If you have a substantial flow increase, the following people offered the cure for the problem, in chronological order:
FieroBUZZ
Raydar
Cooter
rogergarrison
the ogre
BUT, the bulk of the detailed proof was offered by the ogre. However, since it was such an informativ thread, I will send each of you $5, as soon as Nick verifies that there is a flow increase. PM (not email please) me your mailing addresses.
Nick, make SURE you burp that sucker GOOD, when you go back together with it.
Don

Well it is pouring down rain here. So, I wont be able to let you guys know if it cures the flow prob(Most likely will though). As soon as I get a couple hours of dry weather I'll post another replay to tell you all how it went.

thanks

I have the exact same prob but with a 85GT V-6( what ever hapened with this??

I never heard, but from some posts in the mall, I think he may have parted the car out . Your best bet is to try pm'ing him.